Bus travel is an inconvenient way to explore Wine Country. Service is infrequent and the buses can only get you to the main towns, not near many vineyards. Greyhound runs buses from the Transbay Terminal at 1st and Mission streets in San Francisco to Sonoma, Napa, Santa Rosa, and Healdsburg. Sonoma County Transit offers daily bus service to points all over the county. VINE (Valley Intracity Neighborhood Express) provides bus service within the city of Napa and between other Napa Valley towns.
Greyhound (800/231-2222). Sonoma County Transit (707/576-7433 or 800/345-7433). VINE (707/255-7631).